Asked by Michael

If the area of a rectangle is 84 square inches.How do i find its length and width? Length is (x+3) width is (x-2).
Answered by Steve
area = length*width

(x+3)(x-2) = 84
x^2 + x - 6 = 84
x^2 + x - 90 = 0
(x+10)(x-9) = 0

x=9, so

length=12
width=7
Answered by james
12 by 7
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